When I was about 8, and I saw Forbidden Planet on late night TV one weekend, the invisible monster in it really made the hairs on the back of my neck stand up. I bought a copy of this a few years ago and watch it occasionally, but it's just not the same anymore.
You got scared, but the D'Agostino brothers watched the amp dials of the Krell machines maxing out while the Id monster used all the power to channel the dude's subconscious, and named their amplifiers after the movie's lost civiliation. the KRELL.
